subaltern vs junior

subaltern and junior both are nouns.

Word	Noun	Adjective	Verb	Adverb
subaltern	Yes	Yes	No	No
junior	Yes	Yes	No	No

subaltern (noun)	junior (noun)
a British commissioned army officer below the rank of captain	the younger of two persons
	a third-year undergraduate
	term of address for a disrespectful and annoying male

subaltern (adjective)	junior (adjective)
inferior in rank or status	younger; lower in rank; shorter in length of tenure or service
	used of the third or next to final year in United States high school or college
	including or intended for youthful persons